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7 March, 17:47

An object moving at 32m/s takes 8s to come to a stop. What is the object's acceleration?

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  1. 7 March, 19:10
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    Acceleration = (change in speed) / (time for the change)

    Change in speed = (speed at the end) - (speed at the beginning)

    = 0 - 32 m/s = - 32 m/s.

    Acceleration = (-32 m/s) / (8 s) = - 4 m/s²
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